Describe epigenetics and give an example
What will be an ideal response?
Answer: Epigenetics is the idea that some environments can influence how much genetics will matter. So a person is born with a gene for major depression, but the gene may not be expressed (and therefore the person depressed) unless the environment triggers it. Thus a happy, healthy environment in childhood might stave off major depression while an abusive environment would trigger it.
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A researcher conducts a repeated-measures study to evaluate a treatment with a sample of n = 16 participants and obtains a t statistic of t = 1.94 . The treatment is expected to increase scores and the sample mean shows an increase. Which of the following is the correct decision for a hypothesis test using ? = .05?
a. Reject the null hypothesis with a one-tailed test but fail to reject with two tails b. Reject the null hypothesis with either a one-tailed or a two-tailed test c. Fail to reject the null hypothesis with either a one-tailed or a two-tailed test d. Fail to reject the null hypothesis with a one-tailed test but reject with two tails
Slowing reaction time associated with age could be a function of
A. increase in cerebral blood flow B. increase in brain cells C. presence of disease D. all selections are correct
Many teachers and parents consider morality less important than any of the other developments that happen in childhood
Indicate whether this statement is true or false.
What do we call the measure of performance that we expect to correlate with test scores?
a. The predictor b. The criterion c. A standardized test d. An intercept